Most people know how to organize their code with one app. But...what about when you are managing many different apps? Do you use one monorepo or many smaller repos? Where does your shared code live? How do you manage breaking changes across your apps? In this talk, I draw from my own experience to lay out the different options available and provide my recommendations for best practices with the management of many different apps under the same umbrella.

1. Manage Your Huge Codebase
like a Boss
Jeff Whelpley
@jeffwhelpley | GetHuman

2. Hi, I’m Jeff.

3. (Christian)

10. 1. Shared code

11. 1. Shared code
1. Team

12. 1. Shared code
1. Team
1. Change

13. 1. Shared code
1. Team
1. Change
1. Productivity

14. https://whlp.ly/shared-code

15. What is everyone else doing?

19. aws.amazon.com/products/developer-tools

21. whlp.ly/code-netflix

24. buckbuild.com

25. whlp.ly/facebook-code
buckbuild.com

26. https://bazel.buildpiper

27. whlp.ly/ng-bazel
whlp.ly/ng-mono
https://bazel.buildpiper

28. whlp.ly/ng-bazel
whlp.ly/ng-mono
https://bazel.buildpiper

30. Microrepo Monorepo

31. ● AWS Developer Tools
● Jenkins, Bake, Spinnaker
● Bazel, Critique
● Buck, Phabricator
MonorepoMicrorepo

32. ● AWS Developer Tools
● Internal Tooling
● Jenkins, Bake, Spinnaker
● Internal Tooling
● Bazel, Critique
● Internal Tooling
● Buck, Phabricator
● Internal Tooling
MonorepoMicrorepo

35. Stage 1
Single App
Stage 2
Multiple Apps
Stage 3
Multiple Products

36. Stage 1
Single App/package.json
/src
/app

37. Stage 2
Multiple Apps

38. Stage 2
Multiple Apps

39. Stage 2
Multiple Apps

40. Stage 2
Multiple Apps

41. Stage 2
Multiple Apps
/package.json
/apps
/myapp1
/myapp2
/libs
/mylib1
/mylib2

42. Stage 2
Multiple Apps
Stage 3
Multiple Products

43. Stage 2
Multiple Apps
Stage 3
Multiple Products
1 - Project Technologies
+

44. Stage 2
Multiple Apps
Stage 3
Multiple Products
1 - Project Technologies
2 - Team Throughput
+

45. Stage 3
Multiple Products

46. Stage 3
Multiple Products
product
monorepos
&
utility
microrepos

47. Stage 3
Multiple Products
prepos
&
mepos

48. Stage 3
Multiple Products
product
monorepos
&
utility
microrepos

49. utility
microrepos
product
monorepos
&

50. utility
microrepos
product
monorepos
&
Gleb’s rules for microrepos:

51. utility
microrepos
1.Small
product
monorepos
&
Gleb’s rules for microrepos:

52. utility
microrepos
1.Small
1.Testable
product
monorepos
&
Gleb’s rules for microrepos:

53. utility
microrepos
1.Small
1.Testable
1.Stable
product
monorepos
&
Gleb’s rules for microrepos:

54. utility
microrepos
1.Small
1.Testable
1.Stable
1.Isolated
product
monorepos
&
Gleb’s rules for microrepos:

55. utility
microrepos
1.Small
1.Testable
1.Stable
1.Isolated
product
monorepos
&
Gleb’s rules for microrepos:
glebbahmutov.com/blog/really-painless-modular-development

56. product
monorepos
&
utility
microrepos

57. product
monorepos
&
utility
microrepos
1.Split by Team

58. product
monorepos
&
utility
microrepos
1.Split by Team
1.Self-Contained

59. product
monorepos
&
utility
microrepos
1.Split by Team
1.Self-Contained
1.DRY -> PRY

60. product
monorepos
&
utility
microrepos

61. product
monorepos
&
utility
microrepos
hrsoo
jyt
fakeblk
taste
batter
taste
cookbk
nplivo
syrup
creeper

62. hrsoo
jyt
fakeblk
taste
batter
taste
cookbk
nplivo
syrup
creeper
/packages
/swish-web
/package.json
/swish-native
/package.json
/swish-state
/package.json
/swish-api
https://swish.com

63. hrsoo
jyt
fakeblk
taste
batter
taste
cookbk
nplivo
syrup
creeper
/packages
/swish-web
/package.json
/swish-native
/package.json
/swish-state
/package.json
/swish-api
https://swish.com

64. hrsoo
jyt
fakeblk
taste
batter
taste
cookbk
nplivo
syrup
creeper
/packages
/swish-web
/package.json
/swish-native
/package.json
/swish-state
/package.json
/swish-api
https://swish.com

65. /packages
/swish-web
/package.json
/swish-native
/package.json
/swish-state
/package.json
/swish-api https://lernajs.io

67. Deep Dive (coming soon)
medium.com/@jeffwhelpley
twitter.com/jeffwhelpley

68. Deep Dive (coming soon)
medium.com/@jeffwhelpley
twitter.com/jeffwhelpley
Slides from this
presentation
whlp.ly/ng-boss

70. Shout Outs
- Dave Kushal
- Gleb Bahmutov
- Dave Smith
- Yoav Shapira
- Randall Koutnik
- Jeff Cross
- Victor Savkin
- Ben Lesh
- Sebastian Witalec
- Lukas Ruebbelke
- Rado Kirov

71. Thank
you!
@jeffwhelpley
CTO | GetHuman

72. Thank
you!
@jeffwhelpley
CTO | GetHuman
I love me some
prepos & mepos!